In recent years, frequency diverse array (FDA) has been actively studied due to its extended capabilities over phased arrays [1]–[3]. Unlike phased arrays whose transmit elements radiate fixed frequencies and generate an angle-dependent beampattern, FDA applies an element-wise tiny incremental frequency shift to provide additional degrees-of-freedom in angle as well as in range dimension [4]–[6]. In a traditional FDA, the element-to-element incremental frequency offset applied is progressive, which results in a time-periodic and S-shaped range-angle coupled beampattern [1]–[6]. However, it is difficult to accurately estimate the target parameters in the presence of such range-angle ambiguity [6]. Consequently, various solutions have been proposed in an effort to avoid such ambiguity in the FDA beampattern. Among them, employing nonlinear frequency offsets, and using nonuniform array configuration are the two prominent solutions to achieve a decoupled range-angle-dependent beampattern [7], [8].

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评论“具有泰勒窗频偏的频率不同的阵列波束图案合成”

近年来，频分阵列 (FDA) 因其在相控阵上的扩展能力而受到积极研究 [1]-[3]。与发射元件辐射固定频率并生成与角度相关的波束图案的相控阵不同，FDA 应用逐个元件的微小增量频移以提供额外的角度自由度以及范围维度 [4]-[6] . 在传统的 FDA 中，应用的元素到元素增量频率偏移是渐进的，这导致了时间周期和 S 形距离角耦合波束图案 [1]-[6]。然而，在存在这种距离角模糊性的情况下，很难准确地估计目标参数[6]。因此，已经提出了各种解决方案来努力避免 FDA 波束图案中的这种模糊性。其中，